13-02-2016, 00:47
Magnets and electrical equipment
November 30 2007 at 7:00 PM Louise (Login Louise1982)
SENIOR MEMBER
I emailed the manufacturer K&J Magnetics to find out how far you should be from electrical equipment with the DA2 magnet (as this is the strongest), here is their response:
Q) I have read your safety section and wonder how far-reaching the magnetic field is. I have the DA2 magnets and they don't snap together if they're over about 10 inches apart so is 10 inches far enough away to not affect eletrical MOT. and credit cards?
A) As a general rule of thumb, we recommend a distance of 4" + 1" for every 10 lbs of pull force. The DA2 has about 27 lbs of pull force, so we recommend at least 7" of separation from electronics for this particular magnet.
Q) Is this effect cumulative e.g. if I stack 2 magnets I need 14 inches?
A) The pull force does not double if you stack two of the magnets - it will increase by about 10%, so 7 or 8" will be fine.
LL
(Login Lillea)
SENIOR MEMBER
Re: Magnets and electrical equipment
November 30 2007, 9:05 PM
Thank you for posting this, Louise! I was wondering myself. I purchased the magnets from the same company, but likely won't start to use them til later this month, if at all.
I wouldn't want to put the magnets too near my credit card and delete the information on the magnetic strip!
A magnet is hardly a danger for hard drive in a desktop computer, which would be my big concern, because you would never be close enough.
November 30 2007 at 7:00 PM Louise (Login Louise1982)
SENIOR MEMBER
I emailed the manufacturer K&J Magnetics to find out how far you should be from electrical equipment with the DA2 magnet (as this is the strongest), here is their response:
Q) I have read your safety section and wonder how far-reaching the magnetic field is. I have the DA2 magnets and they don't snap together if they're over about 10 inches apart so is 10 inches far enough away to not affect eletrical MOT. and credit cards?
A) As a general rule of thumb, we recommend a distance of 4" + 1" for every 10 lbs of pull force. The DA2 has about 27 lbs of pull force, so we recommend at least 7" of separation from electronics for this particular magnet.
Q) Is this effect cumulative e.g. if I stack 2 magnets I need 14 inches?
A) The pull force does not double if you stack two of the magnets - it will increase by about 10%, so 7 or 8" will be fine.
LL
(Login Lillea)
SENIOR MEMBER
Re: Magnets and electrical equipment
November 30 2007, 9:05 PM
Thank you for posting this, Louise! I was wondering myself. I purchased the magnets from the same company, but likely won't start to use them til later this month, if at all.
I wouldn't want to put the magnets too near my credit card and delete the information on the magnetic strip!
A magnet is hardly a danger for hard drive in a desktop computer, which would be my big concern, because you would never be close enough.